Hi Don,Wynette I am not confused about the variety. I have the emails and PMs to verify.
I do remember a conversation the I had with you and Walt about allowance in the tail of the cuckoo. I do believe that it is just an allowance before a fault and too much would be a DQ. Of course that was the Cuckoo not BC. Sometimes the white is not a genetic or color flaw but caused by damage to the follicle or to rapid of a rate of growth. Most judges understand that so it would be allowed to some extent as either one of those could also be a conditioning factor. This is true for all varieties.
I would be very interested to know who would be petitioning to the APA to change a standard. It certainly wasn't anyone from the MCCUSA. I am a regional director and on the standards committee and anything like that would have been brought up to us first. Unless it is just some rogue breeder out to make their poor breeding skills look better. I am sure there are plenty of those out there. Perhaps they are even a member of our club, but by no means did they do it with club approval. If they are falsely representing themselves well, that is just as bad as accusing someone now isn't it??
As for the white that is showing up, from what I have learned by talking to several different genetics persons, it is believed to be caused by a combination of the e+ / eb genes and/ or certain black melanizers, and hormones. Shank color is irrelevant maybe more coincidental. Of course light shanks are often a sign of eWh genes, but also e and eb. But it isn't an "always" thing you could still have black or even blue shanks with any of those. All of the breeding advice of using an over melanized BC female to those males showing too much color in the breast is one of the causes of most of the white we are seeing now. Those males are likely to be carrying eWh, e or eb. Especially from WJ lines which were basically a mix of Birchen, Duckwing, Wheaten and Black. You can make both a DW and a eWh appear to be a BC if you have enough black...Unfortunately what you see isn't always what you have. After the crazy breeding experiments I did this past season I seriously wonder how many REAL pure Er based "BC" there are out there.
Culling for it is one way to go, test mating to have a better understanding of what you are fighting is more appropriate. I tested my males with DW,Wheaten, and Cuckoo. Also hens can carry the same genes that cause the white in the males only they hide it better due to the lack of the hormones that cause it to show. If you are fighting it in a real for sure BC then it is most likely too much black cull away from the beetle sheen.
I hope you have found the culprit by the time I have typed this. I would really like to discuss it with the person in question if it is true.
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